/*
 * Copyright 2014 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License, version 2.0 (the
 * "License"); you may not use this file except in compliance with the License. You may obtain a
 * copy of the License at:
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package com.polaris.container.gateway.proxy.http2;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.channel.ChannelHandler.Sharable;
import io.netty.handler.codec.http2.Http2Settings;

/**
 * Reads the first {@link Http2Settings} object and notifies a {@link io.netty.channel.ChannelPromise}
 */
@Sharable
public class Http2SettingsHandler extends SimpleChannelInboundHandler<Http2Settings> {

    public final static String  NAME = "Http2SettingsHandler";
    public static Http2SettingsHandler INSTANCE = new Http2SettingsHandler();
    private Http2SettingsHandler() {}
    
    @Override
    protected void channelRead0(ChannelHandlerContext ctx, Http2Settings msg) throws Exception {
        ctx.pipeline().remove(this);
    }
}
